Portable heater



FIG. 1 is a top plan view of a portable heater showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a front end elevational view thereof;

FIG. 5 is a rear end elevational view thereof; and

FIG. 6 is a perspective view thereof, shown on a reduced scale and with the electrical cord shown fragmentarily for ease of illustration.

The characteristic feature of my design consists of the longitudinal recess disposed within the bottom plate between the magnets. 

The ornamental design for a portable heater, as shown and described. 